FR3103564B1 - Anti-noise sensor for motor vehicle - Google Patents

Anti-noise sensor for motor vehicle Download PDF

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Publication number
FR3103564B1
FR3103564B1 FR1913221A FR1913221A FR3103564B1 FR 3103564 B1 FR3103564 B1 FR 3103564B1 FR 1913221 A FR1913221 A FR 1913221A FR 1913221 A FR1913221 A FR 1913221A FR 3103564 B1 FR3103564 B1 FR 3103564B1
Authority
FR
France
Prior art keywords
branch
motor vehicle
switch
noise sensor
cext
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR1913221A
Other languages
French (fr)
Other versions
FR3103564A1 (en
Inventor
Cédric Vergnieres
Xavier Hourné
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vitesco Technologies
Original Assignee
Vitesco Technologies
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vitesco Technologies filed Critical Vitesco Technologies
Priority to FR1913221A priority Critical patent/FR3103564B1/en
Priority to PCT/EP2020/076848 priority patent/WO2021104712A1/en
Publication of FR3103564A1 publication Critical patent/FR3103564A1/en
Application granted granted Critical
Publication of FR3103564B1 publication Critical patent/FR3103564B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960705—Safety of capacitive touch and proximity switches, e.g. increasing reliability, fail-safe
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/96071—Capacitive touch switches characterised by the detection principle
    • H03K2217/960725—Charge-transfer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L’invention concerne un capteur (1) capacitif pour véhicule automobile, ledit capteur (1) comprenant une capacité de stockage (Cext) comportant une première branche (B1) et une deuxième branche (B2), une capacité de détection (Ce) comportant une première branche (D1), reliée à la deuxième branche (B2) de la capacité de stockage (Cext) au niveau d’un point milieu (A), et une deuxième branche (D2), destinée à être reliée à une masse (M), un premier interrupteur (S1), un deuxième interrupteur (S2), un troisième interrupteur (S3), ledit capteur (1) capacitif comprenant une résistance de polarisation (Rpolar) connectée d’une part entre le point milieu (A) de la capacité de stockage (Cext) et de la capacité de détection (Ce) et d’autre part à la deuxième branche (S12) du premier interrupteur (S1). Figure 6The invention relates to a capacitive sensor (1) for a motor vehicle, said sensor (1) comprising a storage capacitor (Cext) comprising a first branch (B1) and a second branch (B2), a detection capacitor (Ce) comprising a first branch (D1), connected to the second branch (B2) of the storage capacity (Cext) at a midpoint (A), and a second branch (D2), intended to be connected to a ground ( M), a first switch (S1), a second switch (S2), a third switch (S3), said capacitive sensor (1) comprising a polarization resistor (Rpolar) connected on the one hand between the midpoint (A) of the storage capacity (Cext) and of the detection capacity (Ce) and on the other hand to the second branch (S12) of the first switch (S1). Figure 6

FR1913221A 2019-11-26 2019-11-26 Anti-noise sensor for motor vehicle Active FR3103564B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1913221A FR3103564B1 (en) 2019-11-26 2019-11-26 Anti-noise sensor for motor vehicle
PCT/EP2020/076848 WO2021104712A1 (en) 2019-11-26 2020-09-25 Noise reduction sensor for a motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1913221A FR3103564B1 (en) 2019-11-26 2019-11-26 Anti-noise sensor for motor vehicle
FR1913221 2019-11-26

Publications (2)

Publication Number Publication Date
FR3103564A1 FR3103564A1 (en) 2021-05-28
FR3103564B1 true FR3103564B1 (en) 2021-10-22

Family

ID=69811085

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1913221A Active FR3103564B1 (en) 2019-11-26 2019-11-26 Anti-noise sensor for motor vehicle

Country Status (2)

Country Link
FR (1) FR3103564B1 (en)
WO (1) WO2021104712A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6194903B1 (en) * 1996-01-21 2001-02-27 I F M Electronic Gmbh Circuit for acquisition of the capacitance or capacitance change of a capacitive circuit element or component
JP4583219B2 (en) * 2005-03-30 2010-11-17 三洋電機株式会社 Power supply for vehicle
US8570053B1 (en) * 2007-07-03 2013-10-29 Cypress Semiconductor Corporation Capacitive field sensor with sigma-delta modulator
FR3027716B1 (en) * 2014-10-28 2017-10-06 Continental Automotive France SENSOR FOR DETECTING THE PRESENCE OF A USER FOR UNLOCKING ACCESS TO A VEHICLE
FR3036480B1 (en) * 2015-05-22 2017-06-02 Continental Automotive France CAPACITIVE PROXIMITY SENSOR FOR MOTOR VEHICLE
US9946920B1 (en) * 2016-11-23 2018-04-17 Image Match Design Inc. Sensing element and fingerprint sensor comprising the sensing elements
EP3349102B1 (en) * 2017-01-16 2022-03-23 Nxp B.V. Electronic device

Also Published As

Publication number Publication date
FR3103564A1 (en) 2021-05-28
WO2021104712A1 (en) 2021-06-03

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